Add config change handling to SourceBufferStream & ChunkDemuxer

media/base/stream_parser_buffer.h

Index: media/base/stream_parser_buffer.h
diff --git a/media/base/stream_parser_buffer.h b/media/base/stream_parser_buffer.h
index da7f64ff22072ac6358b2ec652c8201285307a66..90e4ca9d8ba4f5b1eba21f2ca55cf6ca86a09b2b 100644
--- a/media/base/stream_parser_buffer.h
+++ b/media/base/stream_parser_buffer.h
@@ -12,6 +12,9 @@ namespace media {
 
 class MEDIA_EXPORT StreamParserBuffer : public DecoderBuffer {
  public:
+  // Value used to signal an invalid decoder config ID.
+  enum { kInvalidConfigId = -1 };
+
   static scoped_refptr<StreamParserBuffer> CreateEOSBuffer();
   static scoped_refptr<StreamParserBuffer> CopyFrom(
       const uint8* data, int data_size, bool is_keyframe);
@@ -22,12 +25,18 @@ class MEDIA_EXPORT StreamParserBuffer : public DecoderBuffer {
   base::TimeDelta GetDecodeTimestamp() const;
   void SetDecodeTimestamp(const base::TimeDelta& timestamp);
 
+  // Gets/sets the ID of the decoder config associated with this
+  // buffer.
+  int GetConfigId() const;
+  void SetConfigId(int config_id);
+
  private:
   StreamParserBuffer(const uint8* data, int data_size, bool is_keyframe);
   virtual ~StreamParserBuffer();
 
   bool is_keyframe_;
   base::TimeDelta decode_timestamp_;
+  int config_id_;
   DISALLOW_COPY_AND_ASSIGN(StreamParserBuffer);
 };